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Cornerstone · Grades 3–5 Keystones #1 1 February 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 6⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 10 = 40

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Share 95 in the ratio 2:3

    Answer: 38 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 50, 26, 48, 37, 42, 29, 49. Give your answer to 2 decimal places

    Answer: 40.14

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